package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpSession;
import java.time.LocalDateTime;


@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /*
     * 员工登录
     * */
    @PostMapping("/login")
    public R<Employee> login(HttpSession session, @RequestBody Employee employee) {
        //将页面提交的密码password进行md5加密处理, 得到加密后的字符串
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        //根据页面提交的用户名username查询数据库中员工数据信息
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);
        //如果没有查询到, 则返回登录失败结果
        if (emp == null) {
            return R.error("用户名不存在");
        }
        //密码比对，如果不一致, 则返回登录失败结果
        if (!emp.getPassword().equals(password)) {
            return R.error("密码输入错误");
        }
        //查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (emp.getStatus() == 0) {
            return R.error("账号已禁用");
        }
        //登录成功，将员工id存入Session, 并返回登录成功结果
        session.setAttribute("employee", emp.getId());
        return R.success(emp);

    }

    /*
     * 退出
     * */
    @PostMapping("/logout")
    public R<String> logout(HttpSession session) {
        //清理Session中存储的当前员工
        session.removeAttribute("employee");
        return R.success("退出成功");
    }

    /*
     * 员工添加
     * */
    @PostMapping
    public R<String> save(HttpSession session, @RequestBody Employee employee) {
        log.info("新增员工，员工信息：{}", employee.toString());
        //设置初始密码
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        //employee.setCreateTime(LocalDateTime.now());//创建时间
        //employee.setUpdateTime(LocalDateTime.now());//修改时间

        //获得当前登录用户的id
        Long empId = (Long) session.getAttribute("employee");

        //employee.setCreateUser(empId);//创建人
        //employee.setUpdateUser(empId);//修改人

        employeeService.save(employee);
        return R.success("新增员工成功");
    }

    /**
     * 员工信息分页查询
     *
     * @param page     当前查询页码
     * @param pageSize 每页展示记录数
     * @param name     员工姓名 - 可选参数
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        log.info("page = {},pageSize = {},name = {}", page, pageSize, name);
        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);
        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);
        //执行查询
        employeeService.page(pageInfo, queryWrapper);
        return R.success(pageInfo);
    }

    /*
     * 修改员工状态
     * */
    @PutMapping
    public R<String> update(HttpSession session, @RequestBody Employee employee) {
        log.info(employee.toString());

        //employee.setUpdateTime(LocalDateTime.now());//修改时间
        //employee.setUpdateUser((Long) session.getAttribute("employee"));//修改人

        //调用修改方法
        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    /*
     * 根据id查询员工
     * */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id) {
        log.info("根据id{}查询员工信息...",id);

        Employee employee = employeeService.getById(id);
        if(employee != null){
            return R.success(employee);
        }
        return R.error("没有查询到对应员工信息");
    }

}
